<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <!-- 提示区域 -->
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <!-- 步骤条 -->
      <el-steps
        :space="200"
        :active="activeindex - 0"
        finish-status="success"
        align-center=""
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- tab栏 -->
      <el-form
        :model="addForm"
        :rules="addFormrules"
        ref="ruleFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeindex"
          :before-leave="beforetableleave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>

            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>

            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>

            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>

            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                expand-trigger="hover"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader
            ></el-form-item>
          </el-tab-pane>

          <el-tab-pane label="商品参数" name="1">
            <!-- 渲染表单的item想 -->
            <el-form-item
              :label="item.attr_name"
              v-for="item in manytabledata"
              :key="item.attr_id"
            >
              <!-- 复选框 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlytabledata"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- 上传图片 -->
            <!-- action图片要上传后台的路径 -->
            <!-- list-type渲染出来的呈现方式 -->
            <el-upload
              :action="actionurl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerobj"
              :on-success="handlesuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器组件 -->
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <!-- 添加商品的按钮 -->
            <el-button type="primary" class="butnadd" @click="add"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览对话框 -->
    <el-dialog title="图片预览" :visible.sync="previewVisible" width="50%">
      <img :src="this.previewpath" alt="" class="previrwpathImg" />
    </el-dialog>
  </div>
</template>

<script>
import _ from "lodash";
export default {
  data() {
    return {
      activeindex: "0",
      //添加商品的数据对象
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        //商品所属的分类数组
        goods_cat: [],
        //图片数组
        pics: [],
        //富文本编辑器绑定商品详情描述
        goods_introduce: "",
        //传给后台的静态属性和动态参数
        attrs: [],
      },
      //添加商品的验证规则
      addFormrules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请选择商品分类", trigger: "blur" },
        ],
      },
      // 商品列表
      cateList: [],
      //级联选择器配置对象
      cateProps: {
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },
      //动态参数列表数据
      manytabledata: [],
      //静态属性列表数据
      onlytabledata: [],
      //上传图片的url
      actionurl: "http://127.0.0.1:8888/api/private/v1/upload",
      //图片上传组件的header请求头
      headerobj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      //图片的预览路径
      previewpath: "",
      //图片预览对话框的隐藏与显示
      previewVisible: false,
    };
  },
  created() {
    this.getcateList();
  },
  methods: {
    //获取数据列表
    async getcateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品分类列表失败");
      }
      this.cateList = res.data;
      // console.log(this.cateList)
    },
    //级联选择器变化会触发这个函数
    handleChange() {
      // console.log(this.addForm.goods_cat);
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
      }
    },
    //tags表单切换条件
    beforetableleave(activename, oldactivename) {
      // console.log('即将离开的页面'+oldactivename)
      // console.log('即将进入的页面'+activename)
      // this.$refs.ruleFormRef.validate(value=>{
      //   if(!value)return false
      //       if( this.addForm.goods_cat.length !== 3){
      //   return false }
      // }

      if (oldactivename === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请选择商品分类");
        return false;
      }
    },
    //判断获取的是哪个面板
    async tabClicked() {
      if (this.activeindex === "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateid}/attributes`,
          {
            params: {
              sel: "many",
            },
          }
        );
        if (res.meta.status !== 200) {
          this.$message.error("获取数据失败");
        }

        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ");
        });
        // console.log(res.data);
        this.manytabledata = res.data;
      } else if (this.activeindex === "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateid}/attributes`,
          {
            params: {
              sel: "only",
            },
          }
        );
        if (res.meta.status !== 200) {
          this.$message.error("获取数据失败");
        }
        // console.log(res.data);
        this.onlytabledata = res.data;
        // console.log(this.onlytabledata)
      }
    },
    //预览图片的事件
    handlePreview(file) {
      this.previewpath = file.response.data.url;
      this.previewVisible = true;
    },
    //单击上面的关闭按钮的事件
    handleRemove(file) {
      // console.log(file);
      //1.获取将要删除的图片临时路径
      const filepath = file.response.data.tmp_path;
      //2.从pics中找到这个图片对应的索引值
      const i = this.addForm.pics.findIndex((x) => x.pic === filepath);
      //3.调用splice方法，吧图片信息对象,从pics中移除
      this.addForm.pics.splice(i, 1);
      // console.log(this.addForm);
    },
    //监听图片上传事件
    handlesuccess(response) {
      // console.log(response);
      //1.拼接得到一个图片信息对象
      const picinfo = {
        pic: response.data.tmp_path,
      };
      //2.将图片信息，push到pics数组中
      this.addForm.pics.push(picinfo);
      // console.log(this.addForm);
    },
    //完成添加按钮
    add() {
      this.$refs.ruleFormRef.validate( async(valid) => {
        if (!valid) {
          return this.$message.error("请完成所有必填项");
        }
        //lodash cloneDeep深拷贝处理上传的数组和字符串的冲突
        const form = _.cloneDeep(this.addForm);
        form.goods_cat = form.goods_cat.join(",");

        //合并动态参数和静态属性
        //动态属性
        this.manytabledata.forEach((item) => {
          const newinfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(" "),
          };
          this.addForm.attrs.push(newinfo);
        });
        //静态参数
        this.onlytabledata.forEach((item) => {
          const newinfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          };
          this.addForm.attrs.push(newinfo);
        });

        form.attrs = this.addForm.attrs;
        //  console.log(form)
        //发起添加商品请求
        const { data: res } = await this.$http.post("goods", form);

        if (res.meta.status!==201) {
          return this.$message.error('添加商品失败')
        }
        this.$message.success('添加商品成功')
        this.$router.push('/goods')
      });
    },
  },
  computed: {
    cateid() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return unll;
    },
  },
};
</script>

<style lang="less" scoped>
.el-steps {
  margin: 15px 0;
}
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.previrwpathImg {
  width: 100%;
}
.butnadd {
  margin-top: 15px;
}
</style>